Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. The time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m is equal to
a. 8 sec
b. 2 sec
c. 4 sec
d. 10 sec
e. 6 sec
Q. If span is 150 mts and sag is 10 ft of a cable carrying a load of 3200 kg per horizontal metre then tension of ends is
a. 104,000 kg
b. 107 dynes
c. 1200,000 kg
d. 932,000 kg
e. 584,000 kg
Q. A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be
a. 5 cm
b. 10 cm
c. 12.5 cm
d. 20 cm
e. 15 cm
Q. The principle of conservation of energy cannot be applied in case of
a. Flow of water in a pipe
b. A particle moving in gravitational field
c. Frictional movement of a particle over a surface
d. Frictionless movement of a principle over a surface
e. Simple pendulum
Q. A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be
a. 1 sec
b. 4 sec
c. 2 sec
d. 5 sec
e. 3 sec
Q. In above problem the resultant reaction between the cannon and the ground would be
a. 1146 tonnes
b. 573 tonnes
c. 286.5 tonnes
d. 50 tonnes
e. 145 tonnes
Q. ML2T-2 could be the dimension of all of the following EXCEPT
a. Energy
b. Work
c. 107 dynes
d. Power
e. Torque
Q. Femtometre x Nanometer x (Gigametre)2 =
a. Micrometre
b. Metre
c. Picometre
d. 107 dynes
e. Megametre
Q. When horizontal range of a projectile equal to the distance through which projectile will rise, then the angle of projection of the particle will be equal to
a. 36?
b. 24?
c. 48?
d. 107 dynes
e. 76?
Q. The excape velocity on the surface of the earth is
a. 11.2 km/s
b. 2.2 km/s
c. 5.6 km/s
d. 4.4 km/s
e. 1 km/s
Q. The centre of percussions is
a. The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis
b. The point of application of the resultant of gravity and buoyancy forces of the body
c. The same as centre of gravity
d. The metacentre of the body
e. The point in a body about which it can rotate horizontally and oscillates under the influence of gravity
Q. Plastic collosion of two bodies of equal mass results in a common velocity after impact which is
a. Sum of their initial velocities
b. Difference of their initial velocities
c. Average of their initial velocities
d. Independent of their initial velocities
e. None of the above
Q. In which case power required would be more
a. In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec
b. In lowering a weight of 100 kg along an a inclined plane at an angle of 45? with
c. In lifting up a weight of 100 kg at a constant speed of 3 m/sec
d. In lowering the weight at a constant speed of 3 m/sec
e. In lowering the weight at a velocity of 3 m/sec and acceleration of 1 m/sec2
Q. In case forces of 1 N, 2 N, 3 N, 4 N, 5 N and 6 N act in order along the sides of a regular hexagon, the resultant will be
a. 21 N
b. 107 dynes
c. 2 N
d. 6 N
Q. A boy and his dad put a rope around a tree and stand side by side. What force by the boy can resist a force of 800 N by the dad?
a. 231
b. 246
c. 192
d. 107 dynes
e. 166